Resistor Color Code Calculator Resistor Color Code Calculator Resistor Color Code Calculator Band 1 Black Brown Red Orange Yellow Green Blue Violet Gray White Band 2 Black Brown Red Orange Yellow Green Blue Violet Gray White Band 3 (Multiplier) Black Brown Red Orange Yellow Green Blue Violet Gray White Band 4 (Tolerance) Gold (20%) Silver (10%) Brown (5%) Red (1%) Green (2%) Calculate Resistance This calculator helps you determine the resistance value of a resistor based on its color code. Select the colors for each band to find out the resistor's value and tolerance. Example Calculation For a resistor with the color bands Brown (1), Black (0), Red (100), and Gold (20%): Resistance = (10 + 0) × 100 = 1000 ohms = 1 kΩ Subscribe to Updates Get the latest creative news from SmartMag about art & design. By signing up, you agree to the our terms and our Privacy Policy agreement.